Quercus pagoda |
Quercus graciliformis |
|
---|---|---|
cherrybark oak, Texas oak |
Chisos oak |
|
Habit | Trees, deciduous, to 40 m. Bark nearly black with narrow and noticeably flaky ridges, often resembling that of wild black cherry, inner bark orange. | Trees, tardily deciduous, to 8 m. Bark gray, furrowed. |
Twigs | yellowish brown, 2-3.5 mm diam., pubescent. |
straw colored to brown or deep reddish brown, 1-2 mm diam., glabrate or somewhat pubescent at apex. |
Leaves | blade ovate to elliptic or obovate, 90-300 × 60-160 mm, base cuneate to rounded or truncate, margins with 5-11 lobes and 10-25 awns, lobes oblong, rarely falcate, terminal lobe rarely exceeding lateral lobes in length, apex acute; surfaces abaxially pale, tomentose, adaxially glossy, glabrous, secondary veins raised on both surfaces. |
blade lanceolate to narrowly elliptic, widest proximal to middle, 45-90 × 10-25 mm, base rounded to cuneate, margins entire or with 8-10 teeth or shallow lobes with rounded sinuses, awns 1-9, apex acute to long-attenuate; surfaces abaxially glabrous or occasionally with small axillary tufts of tomentum, adaxially glabrous except for scattered pubescence near base and along midrib. |
Acorns | biennial; cup saucer-shaped to cup-shaped, 3-7 mm high × 10-18 mm wide, covering 1/3-1/2 nut, outer surface puberulent, inner surface pubescent, scale tips tightly appressed, acute; nut subglobose, 9-15 × 8-16 mm, often striate, puberulent, scar diam. 5-9 mm. |
biennial; cup saucer- to shallowly bowl-shaped, 4-6 mm high × 7-10 mm wide, covering 1/4-1/3 nut, outer surface puberulent to glabrate, inner surface uniformly pubescent, scales appressed, acute, occasionally tuberculate at base; nut ovoid to narrowly ellipsoid, 9-18 × 7-10 mm, minutely puberulent, scar diam. 3-4.5 mm. |
Terminal | buds light reddish brown, ovoid, 4-9 mm, strongly 5-angled in cross section, puberulent throughout. |
buds glossy brown or red-brown, ovoid, 1.5-3 mm, minutely ciliate. |
Quercus pagoda |
Quercus graciliformis |
|
Phenology | Flowering spring. | Flowering spring. |
Habitat | Poorly drained bottoms and mesic slopes | Dry rocky canyons of the Chisos Mountains |
Elevation | 0-300 m (0-1000 ft) | 0-1650 m (0-5400 ft) |
Distribution |
AL; AR; FL; GA; IL; IN; KY; LA; MO; MS; NC; OK; SC; TN; TX; VA
|
TX |
Discussion | Quercus pagoda is often treated as a variety of Q. falcata; it is quite distinctive, however, both morphologically and ecologically (S. A. Ware 1967; R. J. Jensen 1989). This species reportedly hybridizes with Q. falcata and Q. phellos (D. M. Hunt 1989). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Quercus graciliformis reportedly hybridizes with Q. emoryi. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Fagaceae > Quercus > sect. Lobatae | Fagaceae > Quercus > sect. Lobatae |
Sibling taxa | ||
Synonyms | Q. falcata var. leucophylla, Q. falcata var. pagodifolia, Q. leucophylla, Q. pagodifolia | Q. canbyi, Q. graciliformis var. parvilobata |
Name authority | Rafinesque: Alsogr. Amer., 23. (1838) | C. H. Muller: Torreya 34: 120. (1934) |
Web links |